1. Ubuntu Security Notices
  2. USN-4565-1

USN-4565-1: OpenConnect vulnerability

Publication date

5 October 2020

Overview

OpenConnect could be made to crash if it received specially crafted input.

Releases

Packages

Details

It was discovered that OpenConnect has a buffer overflow when a malicious
server uses HTTP chunked encoding with crafted chunk sizes. An attacker
could use it to provoke a denial of service (crash).

It was discovered that OpenConnect has a buffer overflow when a malicious
server uses HTTP chunked encoding with crafted chunk sizes. An attacker
could use it to provoke a denial of service (crash).

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
18.04 bionic libopenconnect5 –  7.08-3ubuntu0.18.04.2
openconnect –  7.08-3ubuntu0.18.04.2

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References

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